Combined cycle generation
A combined cycle power plant is the most efficient way to generate electricity. The combined cycle unit reuses the waste heat in a heat recovery steam generator (see sequential combustion and heat recovery steam generator).
Combined Cycle Gas Turbine
Carbon intensity per MWh
Emissions of CO 2 (kg)
MWh sent out
Coal Seam Methane
Engineering Procurement and Construction
Heat Recovery Steam Generator (also called Waste Heat Boiler) is part of the combined cycle operation at the Mica Creek and Swanbank E power stations.
Joule (J) is a unit of energy - defined as the energy expended in one second by an electric current of one Amp flowing through a resistance of one Ohm.
A kilojoule (KJ) is 1,000 joules.
A megajoule (MJ) is one million joules.
A gigajoule (GJ) is one billion joules.
International Standards Organisation (also known as the International Organisation for Standardisation)
Greenhouse Intensity - emissions of greenhouse gases sent out per megawatt hour.
Gigawatt hour = 1 billion watt hours
kiloVolt - one thousand volts
KiloWatt (see watt)
kiloWatt hour = 1,000 Watt hours
Lost time injury (LTI)
An industry standard used by CS Energy to record and monitor safety performance in the workplace (AS 1885.1-1990: workplace injury and disease recording standard.)
Lost time injury frequency rate (LTIFR)
Lost time injury
Employee hours (million)
(12 month moving average)
MegaJoule (see joules)
megawatt hour = I million watt hours
National Electricity Market
Oxides of Nitrogen (Includes both NO and NO 2 )
PetaJoule = 1,000,000,000,000,000 Joules
Sequential combustion is based on the simple concept of reusing heat, where the exhaust gases from the first turbine feed the combustor of the second. At the Swanbank E power station, this process raises the net efficiency of the gas turbine to 58% in combined cycle operation, compared to 44% efficiency achieved from the best coal fired technology.
The Swanbank E turbine generates 260 megawatts by itself, but 385 megawatts in the combined cycle with the heat recovery steam generator and the steam turbine.
Oxides of Sulphur (Includes SO 2 and S0 3)
TeraJoule = 1,000,000,000,000 Joules
Underground Coal Gasification
A watt (W) is a measure of electricity. 1 watt = 1 volt x 1 amp = 1 joule/second
A kilowatt (KW) is one thousand watts
A megawatt (MW) is one million watts
A gigawatt (GW) is one billion watts
A measure of a generator's capability to achieve full load if the plant is not on a planned outage (ie for scheduled maintenance).
Reportable environmental incidents
Refers to incidents that result in a release to the environment which are notified to the Environmental Protection Agency (EPA) as a condition of license.